[PATCH v2 23/25] migration: Fail postcopy preempt with TLS for now

[Peter Xu <peterx@redhat.com>]

The support is not yet there.  Temporarily fail it properly when starting
postcopy until it's supported.  Fail at postcopy-start still allows the
user to proceed with e.g. pure tls precopy even if postcopy-ram is set.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 migration/migration.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/migration/migration.c b/migration/migration.c
index f30bad982c..95cfc483c9 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1802,6 +1802,12 @@ void qmp_migrate_start_postcopy(Error **errp)
                          " started");
         return;
     }
+
+    if (migrate_postcopy_preempt() && migrate_tls_enabled()) {
+        error_setg(errp, "Postcopy preemption does not support TLS yet");
+        return;
+    }
+
     /*
      * we don't error if migration has finished since that would be racy
      * with issuing this command.
-- 
2.32.0